Spray-pump.



C. BROWN.

SPRAY PUMP.

APPLICATION FILED IUNE24| 19H5. l

Patented'Apr. 16, 1918.

Quot/m43 INIIIIIII IHIIIH H I n IIIIIIIIII.

IIIIII GL01/Enano 5M @f3 (im c( 1 indicate like parts.

COLIN BROWN, or ROCHESTER, NEW YORK.

SPRAY-PUMP.

Specification of Letters Vlvatent.

Application filed J une 24, 1916. y Serial No. 105,646.

To all whom it may concern.' A

Be it known that I, COLIN BROWN, va citizen of the United States, residing at Rochester, in thecounty of Monroe and State of New York, have invented certainnew and useful Improvements in Spray-Pumps, of which the following is a specification.

The object of this invention is to provide a hand spray pump which is double acting.

This and other objects of the invention will be fully illustrated in the drawings, described in the specification and pointed out in the claims at the end thereof.

In the drawings,

Figure 1 is a longitudinal section of my improved pump.

Fig. 2 is a side elevation of the lower end of the inner tube of the pump with the outer tube of the pump shown in longitudinal section.

Fig. 3 is a horizontal section on the line 3"-3X of Fig. 1.

In the drawings like reference numerals As shown in the drawings the pump comprises an outer tube 1 of large diameter in which is mounted to slide an inner tube 2 of small diameter. A. stuiino. box 3 -is provided at the upper end oi? the large tube through which the inner-tube 2 passes and with which it forms a tight joint. At the lower end the outer tubeA 1 is provided with a female thread with which engages the nipple 5 to which the suction hose may be attached. Near the end of the tube the tube is spun out to form an inwardly projecting seat 6. Against this seat is pressed a ring 7, which ring is held in place by the nipple 5 with a washer 8 interposed between them. In the ring 7 is an opening'which forms a seat for the ball valve 9 which valve is held in place by the wire arches 10 and 11 which form a cage encircling the ball.

On the lower end of the inner tube 2 is provided a female thread with which engages an extension tube 12. On the upper end of thistube is carried. a ball 13 which forms a valve therewith. At the side of this ball the inner tube 2 is slit toform an opening 14, a portion of the tube 15 being bent inwardly into the tube to form a lip or guard by which the ball is held in place on or near r its seat. Around the inner tube 2 is fastened a ring or iange 16, which ring is rigid with the tube and does not slide thereon.

The upper end of the outer tube 1 isfcut away at y17 to forma seat for the washerl Patented Apr. 16,1918.

18 which engages vtherein and is carried .Y

thereby against the packing 19 which surrounds the inner tube 2. By means of this washer and the end of the tube 1, the packing is held firmly in place so that a tight e joint between the inner and outer tubesis secured. When the outer tube 1 is detached from the stuing box 3, the washer 18fol lows the outer tube until it is disengaged therefrom by the flange 16 which holds'v it on the inner tube but leaves it exposed so,l

that Vall the parts .are accessible andcan .be

easily cleaned.

The lextension tube 12 isformed with a iiange 2O thereon, the upper end of which is cut square and forms a. shoulderthat en-V gages the lower end of the inner tube 2. The' lower edge of the flange is beveled and the lower end of the extension tube is threaded to receive a nipple 21, which, at its upper end, has a funnel shaped flange, between whichy and the beveled end of the iiange 20 is clamped a washer 22. This washer, is cylindrical in shape at the topV and funnel shaped at the bottom'and because of'its shape the washer can be made of ample size and has ample bearing surface ou the side of the outer tube 1 so that the washery eed tively'packs the pump and is effectively cngaged by the extension and nipple by n hich it is held in place in connection with the inner tube 2. v

'Ihe washerf22 lits 'somewhat loosely be-V tween the outer tube and the valve support,

so that as it movesdown it will contract and permit the liquid to flow past it, thus helping to ill the annular yspace between'the inner and outertubes, the liquid flowing both past the lwasher 22 and'throughthe valve 1 3- y Y on theiry respective tubes and by which the tubes may be operated in and out in the pump operation.

Soldered to the upper end of the inner tube is a nipple 25 having a flange 26 thereon. The upper end ofthe nipple is threaded with a male thread. Fastened to the upper Vthe solution is ejected by the pump.

end of the nipple is a cup 27 which provided with a female thread that engages with the male thread of the nipple 25. Betweeny cap'is provided with a flange around the upper edge thereof and the cylindrical part of it is threaded with a male thread which l engages with a corresponding female thread in the cup by which the cap engages with the cup. Between the cap and the deflecting plate'of the cup is provided ay washer 35 byV which a tight joint is made between the cap and the cup above the detlecting plate. The tangential openings 3l and 32 deflect the solution tangentially into the open space between the deflecting plate and the cap so that it has a swirling motion in kthis space between the plate and the cap. lt will also be noticed that the lower end of the opening 3% is countersunk so that between the shape of the opening and the swirling motion of the solution, the solution emerges from the opening 34- in a Vcone shape spray instead of a needle like stream.

The operation of my pump is as follows:

When the inner tube moves upward in the outer tube the ball 13 remains on its seat and theliquid is drawn past the ball valve 9 so as to lill the outer tube. l/Vhen the inner tube moves down the ball valve 9 closes and the ball valve 13 opens and the liquid passes this valve, part of it flowing up into the inner tube 2 and out of the nozzle and the rest of it passing through the opening 14: into the annular space in the outer tube l surrounding the inner tube 2. As the inner tube 2 moves up again the ball valve 13 closes and the ball valve 9 opens and the liquid is again drawn into the outer tube l and the liquid which is in the annular space surrounding the inner tube 2 is forced back through the opening A and up through the inner tube 2 and out at the nozzle.

lt will be seen from the foregoing description that this pump acts as a double acting pump in that it will force the liquid out at the nozzle on both the upward and the downward movement of the inner tube.

It will be seen from the foregoing that all the parts of the pump are easily taken apart and that all of the parts are easily accessible for the purpose of cleaninO'. lt will be understood that this pump is used for spraying solutions in which there is more or less sediment and it is necessary that the pump should keep itself free Vfrom clogging land should lend itself to easy cleaning whenever cleaning is needed and the construction of the pump is designed to secure both of these results.

l claim:

l. The combination of a pump, of an inner cylinder having a valve at the lower end thereof, an opening throughthe side of said cylinder immediately above said valve, la lip struck up from said cylinder and bent inwardly to form a guard above said valve for the purpose of holding it in place.

2. A pump. having an outer and an inner cylinder, said cylinders'being spaced from each other Vto form an intermediate chamber, a valve support at the bottom of the inner cylinder a valve, a flange formed around the outside of said support, said flange being beveled at the bottom, a washer having a cylindrical body surrounding the lower end of the inner cylinder, said washer being funnel shaped at one end to engage with said beveled flange, a nipplev threaded on said valve support and having a funnel shaped flange at its upper end between which flange and the beveled flange on the support tne funnel shapedend of the washer is clamped to hold the washer in place, said inner cylinder having an opening in its side abovesaid valve for admitting liquid into the space between the two cylinders, and means for lim! iting the opening movement of said valve.

A spray pump having in combinationV inner and outer cylinders spaced from each other to form an intermediate chamber, said cylinders being reciprocable one relatively to the other and one of said cylinders having spray nozzle on its outer end, a valve seat at the lower end of the innercylinder, a valve engageable with said seat, a cup-washer on the lower end of the innericylinder ant forining the bottom of the chamber between the two cylinders, said inner cylinder having an opening in its side above the valve for connecting the inner cylinder with the space be` tween the two cylinders, and said inner cylinder having means for limiting the opening movement of said valve.

ln testimony whereof l affix my signature.

COLN BROWN.

@epics of this patent may be obtained for ve cents each,V by addressing the Commissioner of Eatents,

Washington, D. t3. 

